/***************************************************************************
 *   Copyright (C) 2010 by Oleg Goncharov  *
 *   $EMAIL$                           *                          
 *                                                                         *
 *   This file is part of ChessVision.                                     *
 *                                                                         *
 *   ChessVision is free software; you can redistribute it and/or modify   *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include "cimagecamstarve.h"
#include "../error/cerror.h"

using namespace std;

CImageCamStarve::CImageCamStarve(int cam, int _nframes) : nframes(_nframes) {
    camera.open(cam);
    if ( !camera.isOpened()) 
    {
	throw Errors::CError("Unable capture from camera.");
    }
}

CImageCamStarve::~CImageCamStarve()
{

}


Mat CImageCamStarve::GrabFrame() {
    for (int i = 0; i < nframes; i++) 
    {
	if(!camera.grab())
	{
	    cout << "CImageCamStarve: grab() return false." << endl;
	}
    }
    camera >> img;
    return  img;
}




